Correction: 170.4 Billion More Tons CO2 in Atmosphere Now Than in 1900
The concentration of CO2 in the atmosphere was 295 PPM in 1900. It is
now about 275 PPM.
CO2 has an average lifetime of 100 - 120 years in the atmosphere.
1 PPM of CO2 in atmosphere = 2.13 Gt (billions of tons) of carbon.
375 PPM - 295 PPM = 80 PPM. 80 X 2.13 billion tons = 170.4 billion tons.
Conclusion: There are 170.4 billion more tons of CO2 in the atmosphere
now than in 1900.
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